What term refers to the gene that is expressed when two different genes for a trait are present in a gene pair?

Facilitates growth and change in neurons and the migration of neurons to different sites in the brain

Why reason best illustrates why hershey and chase chose to use viruses in their experiment?

What is the main difference between the central nervous system (cns) and the peripheral nervous system (pns)? .the cns involves the brain and spinal cord, and the pns involves the body nerves. the cns involves the body nerves, and the pns involves the brain and spinal cord. the cns involves sensory neurons, and the pns involves motor neurons. the cns involves motor neurons, and the pns involves sensory neurons.